IntBuffer compact() 方法在 Java 中
可以使用 java.nio.IntBuffer 类中的 compact() 方法压缩缓冲区。此方法不需要参数,并且它会返回具有与原始缓冲区相同内容的新压缩 IntBuffer。如果缓冲区是只读的,则会抛出 ReadOnlyBufferException。
演示这一点的程序如下 −
示例
import java.nio.*; import java.util.*; public class Demo { public static void main(String[] args) { int n = 5; try { IntBuffer buffer = IntBuffer.allocate(n); buffer.put(3); buffer.put(7); buffer.put(5); System.out.println("The Original IntBuffer is: " + Arrays.toString(buffer.array())); System.out.println("The position is: " + buffer.position()); System.out.println("The limit is: " + buffer.limit()); IntBuffer bufferCompact = buffer.compact(); System.out.println("
The Compacted IntBuffer is: " + Arrays.toString(bufferCompact.array())); System.out.println("The position is: " + bufferCompact.position()); System.out.println("The limit is: " + bufferCompact.limit()); } catch (IllegalArgumentException e) { System.out.println("Error!!! IllegalArgumentException"); } catch (ReadOnlyBufferException e) { System.out.println("Error!!! ReadOnlyBufferException"); } } }
以上程序的输出如下 −
输出
The Original IntBuffer is: [3, 7, 5, 0, 0] The position is: 3 The limit is: 5 The Compacted IntBuffer is: [0, 0, 5, 0, 0] The position is: 2 The limit is: 5
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